General Science Questions Practice Question and Answer
8 Q: Which of the following is a stealth aircraft virtually undetectable even by radar ?
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651eb4c2397480da1f1a43f5- 1B-2 Spirittrue
- 2Bl-B Lancerfalse
- 3B-52 Stratofortreesfalse
- 4FA-18 Hornetsfalse
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Answer : 1. "B-2 Spirit "
Explanation :
The North rop Grumman B-2 Spirit also known as the stealth technology designed for penetrating dense antiaircraft defenses. It is able to deploy both conventional and nuclear weapons.
Q: Which is a red planet in Solar system?
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6284e3ce3f7a1029b93731ab- 1Mercuryfalse
- 2Venusfalse
- 3Marstrue
- 4Saturnfalse
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Answer : 3. "Mars "
Q: Which matching is not correct?
927 063bd1f7761d62119f1d2bc7b
63bd1f7761d62119f1d2bc7b- 1Electromagnetism - Faradayfalse
- 2Theory of Inheritance - Darwintrue
- 3Laws of Inertia - Newtonfalse
- 4None of these.false
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Answer : 2. "Theory of Inheritance - Darwin"
Q: A copper disc has a circular hole in the center when the copper disc is heated then the diameter of the hole is-
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63bd205d3d35cd0deed357c8- 1will remain the samefalse
- 2will decreasetrue
- 3will increasefalse
- 4will depend on other factorsfalse
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Answer : 2. "will decrease"
Explanation :
When a copper disc with a circular hole in the center is heated, the diameter of the hole will generally increase. This phenomenon occurs due to the expansion of the copper material as it is heated. When a material is heated, its particles gain energy and move more vigorously, leading to an increase in volume, and consequently, an increase in the diameter of the hole and the entire disc. The exact amount of expansion would depend on factors such as the temperature increase and the material properties of copper.
Q: What is the correct statement related to Avogadro?
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647a17a851bf194753ed82db- 1Avogadro made a distinction between electrons and neutrons.false
- 2Avogadro discovered a difference between animal and plant cell.false
- 3Avogadro discovered electrons.false
- 4Avogadro made a distinction between atoms and moleculestrue
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Answer : 4. "Avogadro made a distinction between atoms and molecules"
Explanation :
This is a fundamental constant in chemistry that represents the number of atoms or molecules in one mole of a substance. (Option 4 is correct) Its value is approximately 6.022 x 1023, and it is denoted by the symbol "N_A". Avogadro's number is a key concept in stoichiometry. The branch of chemistry deals with the quantitative relationships between reactants and products in chemical reactions.
Q: In SI unit system, pascal is the unit of
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628b6250d84556078adba396- 1pressuretrue
- 2workfalse
- 3cnergyfalse
- 4powerfalse
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Answer : 1. "pressure "
Q: When there is a cut in your finger, excessive blood loss is prevented by clotting of blood helped by ___________.
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639c8499c7eb1b240b5f53df- 1Plasmafalse
- 2RBCfalse
- 3Plateletstrue
- 4WBCfalse
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Answer : 3. "Platelets"
Q: Which one of the following is not an antioxidant?
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62e7de3c4404a856fa0e884c- 1Vitamin Efalse
- 2Seleniumfalse
- 3Lycopenefalse
- 4Aspartametrue
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Answer : 4. "Aspartame"
Explanation :
All of the following are peroxidases.
(A) Vitamin E
(B) Selenium
(C) Lycopene